From: Keshavamurthy Anil S <anil.s.keshavamurthy@intel.com>
Date: Mon, 12 Dec 2005 08:37:12 +0000 (-0800)
Subject: [PATCH] kprobes: fix race in aggregate kprobe registration
X-Git-Tag: v2.6.15-rc6~131
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=adad0f331f9c693129e81e233c5461e2e7c3e443;p=pandora-kernel.git

[PATCH] kprobes: fix race in aggregate kprobe registration

When registering multiple kprobes at the same address, we leave a small
window where the kprobe hlist will not contain a reference to the
registered kprobe, leading to potentially, a system crash if the breakpoint
is hit on another processor.

Patch below now automically relpace the old kprobe with the new
kprobe from the hash list.

Signed-off-by: Anil S Keshavamurthy <anil.s.keshavamurthy@intel.com>
Acked-by: Ananth N Mavinakayanahalli <ananth@in.ibm.com>
Cc: "Paul E. McKenney" <paulmck@us.ibm.com>
Signed-off-by: Andrew Morton <akpm@osdl.org>
Signed-off-by: Linus Torvalds <torvalds@osdl.org>
---

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